PSI - Issue 33

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2021) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 33 (2021) 773–780

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo Abstract The goal of the present research is to theoretically estimate both fatigue strength and lifetime of Ductile Cast Iron (DCI) smooth specimens under uniaxial and biaxial cyclic loading. To such an aim, a critical plane-based multiaxial fatigue criterion formulated in terms of stresses is hereafter applied to several experimental fatigue data available in the technical literature, related to both infinite and finite life tests. The theoretical results (in terms of fatigue strength and fatigue life) are compared with the experimental ones and, for finite life fatigue tests, also with those derived through the Crossland criterion. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Keywords: DCI specimens; fatigue strength; fatigue lifetime; stress-based multiaxial fatigue criterion. 1. Introduction Cast irons are Fe-based alloys, with a content of carbon equal to about 2%. In particular, “white” cast irons contain iron carbide (i.e. cementite); whereas such alloys are named “grey” cast irons when carbon is present as graphite. Among the latter, Ductile Cast Irons (DCIs) are characterised by spheroidal graphite particles (also named C tp IGF26 - 26th International Conference on Fracture and Structural Integrity Fatigue strength evaluation and lifetime estimation for ductile cast irons under multiaxial loading Sabrina Vantadori a *, Andrea Carpinteri a , Camilla Ronchei b , Daniela Scorza c , Andrea Zanichelli a a Department of Engineering & Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy b Department of Civil Engineering, University of Calabria, via Pietro Bucci, 87036 Arcavacata di Rende (CS), Italy c Department of Engineering, University of Naples Parthenope, Centro Direzionale Isola C4, 80143 Napoli, Italy

* Corresponding author. Tel.: +0039 0521 905962. E-mail address: sabrina.vantadori@unipr.it

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo 10.1016/j.prostr.2021.10.085